Concrete building-slab.



' J. BELUNGHAM.

CONCRETE BUILDING SLAB,l APPLICATION FILED APR. :4. 191s.

l ,994,224. Patented Feb. 11, 1919.

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JOHN BELLINGHAM, 0F MASTERTON, NEW ZEALAND.

CONCRETE BUILDING-SLAB.

Specication of Letters Patent.

Patented nel. ii, wie.

Application filed April 14, 1916. Serial N o. 91,033.

To all whom t may concern Be it known that I, J oHN BELLINGHAM, a citizen of the Dominion of New Zealand, and residing at Masterton, in the Provincial Distri ct of Wellington, in the Dominion of New Zealand, have invented certain new and useful Improvements in Concrete Building- Slabs, of which the following is a specification.

This invention relates to slabs or blocks (hereinafter referred to as slabs) made of concrete or the like, and used in the construction of walls and other parts of buildings. Heretofore it has been the usual practice to make walls of buildings with studs or bars, or a framing to which the slabs were secured. The studs, bars or framing also served as distance pieces for keeping the layers of slabs at a proper distance apart.

By my invention the use of studs, bars, framing or the like for erecting the slabs is dispensed with; and the invention comprises the making of studs integral with the 'slabs, which are thereby strengthened, and

as the slabs are placed in position, the studs also are built up and serve the purpose of distance pieces for keeping opposing or inner or outer layers of slabs at correct distances apart in the construction of hollow.

walls. The studs are made in half parts forming half studs, which are integral with the slabs and are connected together by metal keys and by a facing of liquid cement, enameling or the like. The keys also unite and hold in position the superposed courses.

of slabs. The half studs may be further secured together by forming rabbets in their faces, pins being passed through the rabbets and retained by keeper rods. When it is desired to build a wall of increased thickness spacing blocks are inserted between the half studs and secured to the rabbets.

The half studs are so located upon the blocks that the bond of the blocks is accurately kept with a minimum of trouble, the operation of placing the studs in juxtaposition resulting in the bond being kept.

The invention will now be described in detail, and for that purpose reference will be made to the accompanying drawings@ wherein Figure 1, is a the invention,

Fig. 2, is a sectional elevation on line i A, Fig. l.

plan of a wall embodying block.

shown in Fig. 8. The lower Fig. 3, is a perspective view of a slab,

Fig. 4, is a perspective view of a half slab,

Fig. 5, is a perspective view of a' miter ended slab of an outer layer of slabs,

Fig. 6, is a perspective view of a miter ended half slab,

Fig. 7 is a perspective view of a slab with rabbeted studs,

Fig. S, is a perspective view of a key. Fig. 9,l is a perspective view of a ventilator,

Fig. l0, is a position, and

Fig. 1l, is a plan of a' spacing block in perspective view of a spacing The slab l is made in any desired size and thickness, the upper and lower edges havin rabbets 2 and 3 respectively. Half studs 4 6a and 6b in the ends of the slabs. The half studs of opposing slabs are further united by metal keys made H shape as members 8 of the key are inserted in recesses 9 formed in the upper ends of the half studs 4 and 5 and secured therein by cement. The upper members 10 of the key 7 are inserted in recesses formed inthe lower ends of the half studs 4 and 5 and corresponding to the recesses 9, cement being used as before to secure the key to the slab. Grooves l1 leading from the recess 9 are formed in the ends of the studs to receive the crossbar of the key 7. When the members 8 and 10 of the keys are inserted in the recesses 9 as described, the opposing or inner and outer layers of slabs are united together, and the superposed courses of slabs are also united by the keys.

Fig. 7 shows half studs with rabbets 13 and one pair of half studs in Fig. l is shown with rabbets. Pins or plates 14 pass through the overlapping rabbets of the studs and vertical keeper wires or rods 15 are passed through holes in the pins to prevent the same from withdrawing.

The slabs l are laid in courses with their ends butting together and with the rabbeted edges of one course of slabs taking into the rabbeted edges of the next course. Liquid cement or the like is poured into the holes 6 and a layer of cement or the like is applied to the rabbeted edges of the slabs and to the opposing faces of the half studs. The keys 7 are placed in the recesses 9 and floated around with cement.

A strong, durable, waterproof and sanitary wall of excellent appearance is Ythus built without the aid of framing, panels, shutters or boarding, thereby reducing the cost of construction.

The wall may be reinforced, if desired as when a lengthy wall is to be made, by filling any of the hollows ist with concrete.

A wall is made of increased thickness lby altering the thickness of the half studs l and 5, and thereby spacing the layers of slabs apart and when it is desired to make a wall of considerably increased thickness distance blocks or pieces 55 are used. These blocks are made with rabbets 56 which fit into the rabbets 18. Pins or plates 14 hold the said blocks in position, see Figs. 10 and 11.

The centers of the half studs l and 5 are located at a distance from the ends of the slabs equal to one fourth part of the total length of the slab. By spacing the half studs apart in this manner the bond of the slabs ismaintained.

Ventilation is provided by inserting gratings 57'and 58 in the inner and outer layers of slabsrespeetively. The gratings have a casing -or flange 59 see Fig. 9 around which the concrete when forming the slab is cast. Ventilation between the slabs laterally is provided by forming recesses 60 in the half Copies of this patent may be obtained for ve cents studs 4 and 5 as-shownin Fig. Zand by dotted'lines in Fig. 3.

Vhat I do claim and desire to secure by Letters vSPa-tent of Athe TUnited States is 1. A building structure, comprising walls arranged at an angle to each other, each wall Yincluding inner and outer parallel corner units, the inner and outer units of eaclmvall having projections extending into face abutting -relation l=wfit,heach other and the proj ections of the two outer units extending into abutting relation, and connecting members interlocking respectively with the abutting projections vof the innerfand Aouter units of each wall and the yabutting projections of the two outer units.

2. A building structure, comprising `walls arranged atan angle to each other, each wall 'includ-ing inner and outer parallel corner units, the inner and outer units ofeach Wall having projections extending into face abutting arelation with veach other and the projections of the `two outer -units extending into abutting relation, opposed apertures Vformed in 'the abutting Yprojections of each pair of inner and outer units and other opposed apertures Ain the abutting projections'ofthe outer members `and a connecting member -interlocked with each pair of opposed apertures.

In testimony whereof 'I have signed my nameto this specification in the Ypresence of two witnesses.

JOHN BEL-LINGHAM.

Witnesses:

EDNA J. yCoLLnY, OTHo. W. WILTON.

each, by addressing the vGoirmnissionerwf Patents,

Washington, iD. C. 

